109 results about "Cyclopentanone" patented technology

The present invention relates to the chemical industry field, and particularly relates to a method for synthesizing valerolactam. The steps are as follows: cyclopentanone and the reaction auxiliary cyclohexanone are mixed in a certain proportion, and then through ammoximation reaction, Beckmann rearrangement reaction, hydrolysis and neutralization reaction, and then through separation, valerolactam is obtained. The method of the present invention has a high atom utilization rate and a high product extraction rate, and has the prospect of actual industrial production.

The invention provides a preparation method of 2-pentyl-2-cyclopentenone, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: carrying out a first-stage isomerization reaction on 2-pentylidene cyclopentanone and a first composite catalyst in a first atmosphere to obtain an intermediate, carrying out a second-stage isomerization reaction on the intermediate and a second composite catalyst in a second atmosphere, and controlling the volume ratio of nitrogen to hydrogen in the first atmosphere and the second atmosphere to obtain the 2-pentylidene cyclopentanone. In the first-stage isomerization reaction, the conversion rate of converting 2-pentylidene cyclopentanone into 2-pentyl-2-cyclopentenone is increased, and in the second-stage isomerization reaction, the use amount of hydrogen in the second atmosphere is reduced, the temperature of the second-stage isomerization reaction is increased, generation of by-products is inhibited, and the yield of 2-pentylidene cyclopentanone is increased. Further, the yield and the purity of the 2-pentyl-2-cyclopentenone can be improved. According to the preparation method, the first-stage isomerization reaction and the second-stage isomerization reaction are continuous reactions, intermittent reactions are not needed, and the preparation method is more suitable for industrial application.

The invention belongs to the technical field of organic matter preparation, and particularly relates to a preparation method of 2-pentylcyclopentyl-2-ketene. According to the method, methanol is used as a solvent, sulfonic acid type resin doped with lewis acid is used as a catalyst to catalyze the isomerization reaction of 2-pentylidene cyclopentanone, the catalyst and the methanol solvent can jointly promote the isomerization reaction of 2-pentylidene cyclopentanone, and the catalytic efficiency is high, so that the reaction yield is remarkably increased, and the catalyst cost is reduced; in addition, a fixed bed reactor continuous production mode is adopted, waste salt is prevented from being generated when the acid catalyst is quenched by processes such as HCl / HBr / p-toluenesulfonic acid, and methanol is used as a solvent, so that the byproduct dimethyl ether is simply separated from water and the solvent methanol. In addition, when the sulfonic acid type resin doped with the lewis acid is used for catalyzing the isomerization reaction of 2-pentylidene cyclopentanone, the stability is high, and the service life is long.

The invention relates to the technical field of flexible display materials, in particular to a semi-aromatic CPI film and a preparation method thereof. The invention relates to a semi-aromatic CPI film. The semi-aromatic CPI film is prepared by carrying out polymerization reaction on alicyclic dianhydride and diamine, the diamine comprises a diamine containing trifluoromethyl, a diamine containing benzimidazole and a diamine containing vinyl phenoxy; the alicyclic dianhydride comprises one or two of norbornane-2-spiro-alpha-cyclopentanone-alpha '-spiro-2'-norbornane-5, 5 ', 6, 6'-tetracarboxylic dianhydride and cyclobutane tetracarboxylic dianhydride, and the alicyclic dianhydride comprises one or two of norbornane-2-spiro-alpha-cyclopentanone-alpha '-spiro-2'-norbornane-5, 5 ', 6, in order to solve the problem that application of an existing polyimide film in a flexible substrate is limited due to the fact that optical properties, high temperature resistance, mechanical properties and dimensional thermal stability of the existing polyimide film are difficult to consider, the temperature resistance, the dimensional stability and the mechanical properties are enhanced while the optical properties of colorless transparent polyimide are kept, and the application prospect is wide. And the application of the flexible display substrate in the field of flexible display substrates is widened.

The invention relates to the technical field of biological medicines, in particular to a polycyclic polyisopentenyl cyclopentanone compound as well as a preparation method and application thereof. The polycyclic polyisopentenyl cyclopentanone compound provided by the invention has a structural formula as shown in a formula 1; the preparation method comprises the following steps: by taking dry fruits of hypericum berry as raw materials, carrying out percolation extraction and concentration to obtain an extract, suspending the extract in water to obtain a suspension, and extracting and concentrating the suspension with petroleum ether to obtain a crude extract; the crude extract is taken and subjected to positive and negative phase silica gel column separation, MCI medium-pressure column chromatography, Sephadex LH-20 gel column chromatographic separation, high performance liquid chromatography preparation and CHIRALPAK IG chiral column resolution, and the polycyclic polyisopentenyl cyclopentanone compound is obtained. The protection activity of the compound on AC16 myocardial cell injury induced by cold ischemia is evaluated, and the compound can be used for preparing the polycyclic polyisopentenyl cyclopentanone compound. The compounds can be used as lead compounds for developing medicines for preventing and treating myocardial cold ischemia injury.

This two-component type room temperature rapid-curable resin composition comprises, at a specific ratio: a first agent containing, at a specific ratio, (A) an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain, (B) a hydrolyzable organosilane compound represented by formula (1) (in formula (1), R1 represents a monovalent hydrocarbon group, n represents 1-8, and m represents 3 or 4) and / or a partial hydrolysis condensate thereof, and (C) a curing catalyst; and a second agent containing (A') an organic polymer in which the molecule chain terminals are blocked by a hydrolysable silyl group and / or a hydroxyl silyl group, and in which an organopolysiloxane structure is not included in the polymer main chain. The two-component type room temperature rapid-curable resin composition has excellent rapid curability and deep curability, provides fine workability, and, when being cured, causes elimination / release of a cyclic ketone compound such as cyclobutanone and cyclopentanone as a leaving group (elimination compound). Thus, the composition solves problems regarding safety and hazardous properties with respect to human and the environment.

The utility model relates to the technical field of preparation devices, and discloses a cyclopentanone purification preparation device which comprises a device body, a condensation chamber and a stirring assembly, a storage tank is arranged at the bottom of the device body, a supporting base is fixedly connected to the outer portion of the storage tank, and a sealing tank top is arranged at the top of the device body. And a feeding pipe is fixedly connected to the interior of the sealing tank top, the stirring assembly is arranged in the device body, and a condensation chamber is arranged in the device body. Steam in the device body can enter a steam inlet through the formed steam inlet and enter a condensation pipe through the steam inlet, the steam in the condensation pipe is condensed into water drops through cooling liquid in a condensation chamber, the water drops flow into a material storage tank, and therefore integrated purification work can be conducted; the operation process is simpler, the manual intervention is reduced, the operation difficulty and the possibility of errors are reduced, and the overall purification efficiency of the equipment is improved.

The invention belongs to the technical field of aliphatic ketone preparation, and particularly relates to a preparation method and device of 2-pentylidene cyclopentanone. The method comprises the following steps: by taking activated solid alkali as a catalyst, carrying out catalytic synthesis reaction on cyclopentanone and n-valeraldehyde in a fixed bed reactor to obtain a catalytic synthesis reaction solution; the solid alkali comprises a carrier and an active component loaded on the carrier; the catalytic synthesis reaction liquid is separated and purified through a concentration tower, and 2-pentylidene cyclopentanone and fractions containing n-valeraldehyde, cyclopentanone and water are obtained respectively; and carrying out oil-water separation on the fraction containing n-valeraldehyde, cyclopentanone and water to obtain n-valeraldehyde and cyclopentanone, and circularly carrying out catalytic synthesis reaction on the n-valeraldehyde and cyclopentanone as raw materials. The activated solid alkali is used as the catalyst, the use of an alkaline aqueous solution is avoided, the discharge of wastewater is reduced, the raw material conversion rate is high, and the product yield is high.

The application relates to a supported NiSn-ReO x / TiO2 catalyst and a preparation method thereof and application thereof in selective hydrogenation of furfural. In the preparation method, a continuous impregnation method is used to load NiSn alloy and ReO x on a titanium dioxide carrier, formation of the NiSn alloy effectively inhibits deep hydrogenation of a furan ring by a Ni-based catalyst, and ReO x doping greatly improves hydrogenation activity of the catalyst for a C=O bond and a rearrangement rate of furfuryl alcohol. The prepared catalyst is used for catalyzing water-phase hydrogenation of furfural to prepare cyclopentanone, and at a lower reaction temperature and hydrogen pressure, the catalyst has higher catalytic conversion efficiency and cyclopentanone selectivity, furfural conversion rate is close to 100%, and cyclopentanone yield is as high as 92.5%. The prepared NiSn-ReO x / TiO2 catalyst has high dispersion of active components, good stability and is easy to recover.

The invention belongs to the technical field of fine chemical engineering and electronic material purification, and particularly relates to a method for efficiently removing trace metal ions (Al, Cr, Cu and Fe) in cyclopentanone by utilizing a chitosan-based adsorbent, so that the trace metal ions reach the electronic-grade purity standard (the total content of the metal ions is 1t; the removal method comprises the following steps: (1) fully mixing the modified chitosan adsorbent with a cyclopentanone solution, and carrying out adsorption for 0.5-20 hours at the adsorption temperature of 20-50 DEG C; (2) separating the adsorbent loaded with the metal ions after adsorption from the cyclopentanone solution to obtain the cyclopentanone solution in which the metal ions are deeply removed and the adsorbent loaded with the metal ions; (3) mixing the adsorbent loaded with the metal ions with a desorption agent for desorption, and then filtering and separating out the adsorbent; and (4) drying the adsorbent, and recycling the adsorbent in the step (1).

The invention discloses a peach ketone synthesis method, which relates to the technical field of essence and perfume synthesis, and comprises the following steps: adding cyclopentanone and glacial acetic acid into a reaction container, starting stirring, adding manganese acetate (II) and cobalt acetate (II), and then adding acetic anhydride; introducing dried air below the liquid level, heating to 80-100 DEG C, dropwise adding D-limonene, and carrying out a heat preservation reaction after dropwise adding is finished; gC monitors the reaction endpoint, and the reaction is stopped when the product purity of the reaction liquid is not increased any more; after the reaction is finished, filtering, carrying out reduced pressure distillation to recover cyclopentanone, glacial acetic acid and unreacted D-limonene, after the recovery is finished, adding methanol and n-heptane into kettle liquid, carrying out water extraction, washing and liquid separation, washing an organic phase with a sodium bicarbonate aqueous solution, carrying out reduced pressure distillation on the organic phase to recover n-heptane, and after the recovery is finished, obtaining a peach ketone crude product; and carrying out crude drawing and rectification on the peach ketone crude product to obtain a peach ketone finished product. The method has the advantages of mild reaction conditions, low safety risk and few three wastes, and can obtain a high-purity peach ketone finished product.

This invention discloses an alloy catalyst, comprising a support and a copper-ruthenium alloy supported on the support, wherein the copper-ruthenium alloy is: Cu 0.7 Ru 0.3 The alloy catalyst prepared by this invention can be used to prepare cyclopentanone. The catalyst has high activity, good stability, and low price. The reactants used in the reaction are renewable, widely distributed, and inexpensive. The preparation of cyclopentanone using the catalyst of this invention does not require the introduction of acid or alkali, which solves the problem of difficult acid treatment in the prior art. Furthermore, it is not corrosive to the reaction equipment, which is conducive to large-scale production.

The invention relates to the field of waste liquid separation, and discloses a process for separating cyclopentanone and propylene glycol methyl ether waste liquid through heterogeneous reaction rectification, which comprises the following steps: dividing a common rectification tower into three sections: a rectification section, a reaction section and a stripping section; raw materials are waste liquid of propylene glycol monomethyl ether and cyclopentanone and are fed into the tower in a rectifying section, and acetic acid is used as a reaction raw material and is fed into the tower in a stripping section; in the reaction section, propylene glycol methyl ether reacts with acetic acid to generate propylene glycol methyl ether acetate and is separated from cyclopentanone at the same time, only acetic acid is introduced in the process and can be completely converted into propylene glycol methyl ether acetate, and recycling of added materials for extractive distillation or azeotropic distillation does not need to be considered.

This invention belongs to the field of chemical technology, specifically relating to a method for preparing glutaric acid. The method includes: reacting cyclopentanone with an oxygen-containing gas in the presence of a solvent and a catalyst, and separating the glutaric acid; the contact is carried out in the presence of an auxiliary, wherein the auxiliary is a C5-C6 alcohol and / or a C6 ketone. This invention, by adding a suitable auxiliary to the cyclopentanone oxidation catalytic reaction, improves the conversion rate of cyclopentanone, enhances the selectivity of glutaric acid, reduces the occurrence of side reactions, and alleviates the burden of impurities in the synthesis liquid, achieving better technical results.

The present invention relates to a process for reusing a polymer composition comprising at least one biodegradable polyester, starch and / or additives, comprising the steps of: (1) contacting said biodegradable polymer composition with a first solvent comprising from 50 to 100% by weight of cyclopentanone, obtaining a liquid fraction comprising at least one biodegradable polyester and a solid fraction comprising insoluble starch and / or additives; (2) separating said liquid fraction comprising at least one polyester from said solid fraction; (3) at least partially removing said first solvent from said liquid fraction; (4) reusing the polyester obtained from said liquid fraction in a polymerisation or thermoplastic transformation process, thereby obtaining a biodegradable polymer composition. Biodegradable polyesters obtained by means of the said reutilisation process, biodegradable polymer compositions comprising them, and biodegradable articles obtained therefrom constitute further objects of the invention.

The invention relates to a preparation method of methylenecyclopentane and a composition containing the methylenecyclopentane, in particular to a method for synthesizing the methylenecyclopentane by reacting substituted triphenylphosphine (such as tris (4-methoxyphenyl) phosphine and the like) with methyl iodide / methyl bromide to generate substituted methyl triphenyl phosphonium halide and then reacting with cyclopentanone through Wittig in the presence of alkali. Compared with the traditional method, the method has the advantages that the byproduct is substituted benzene (the boiling point is more than 100 DEG C), the boiling point of the substituted benzene is obviously different from that of the target product (the boiling point is 77 DEG C), methylene cyclopentane with the purity of more than 99% can be obtained through simple rectification, and the yield reaches 85-95%.

The invention discloses a method for continuous reaction of cyclopentanone and C4-C8 aldehyde. The method comprises the following steps: 1) mixing a mixed solution of cyclopentanone and C4-C8 aldehyde with a first alkali solution in a first microporous disperser to obtain a reaction raw material, and reacting the reaction raw material in a first pipeline reactor; (2) mixing the reaction system obtained in the step (1) with a second alkali solution in a second microporous disperser, and reacting in a second pipeline reactor; and 3) mixing the reaction system obtained in the step 2) with a third alkali solution in a third microporous disperser, and reacting in a third pipeline reactor. According to the method, at least three microporous dispersers and pipeline reactors correspondingly arranged behind the microporous dispersers are arranged, and a catalyst alkali solution is added into a reaction system from different microporous dispersers in batches, so that the reaction has high reaction selectivity, the yield of a target product is high, and continuous production can be realized at relatively low energy consumption.

The environmentally friendly spinning polymer solution for generating a nanofibrous structure in an electrostatic field includes a polymer, a solvent system, and possibly other additives to modify the conductivity of the solution. The polymer at a concentration of 10 to 20 wt% is at least one polymer from the group consisting of polylactic acid (PLA), polysulfone (PSU), polyurethane (PU), and cellulose acetate (CA). The solvent system is a green solvent system comprising at least two of the green solvents selected from the group consisting of cyclopentanone (CPO), ethyl lactate (EL), methyl lactate (ML), and acetone. The nanofibrous nonwoven fabric, which can be prepared by spinning the mentioned spinning polymer solution, contains nanofibers with an average diameter of 100 to 500 nm.

The invention relates to a method for a palladium-catalyzed cyclization extension reaction of butadienes. Specifically, under the condition that tert-butyl nitrite is oxidized under the catalysis of palladium, the cyclopentanone compound is obtained through a ring extension reaction of butyl fulvene and water. According to the invention, green and rich water is used as a raw material, and a series of cyclopentanone compounds are obtained under mild conditions.

The present application relates to a method for synthesizing cyclopentadiene from a biomass platform compound cyclopentanone, which uses cyclopentanone as a raw material, and is synthesized by hydrogenation-deoxidization and dehydrogenation in series in a fixed-bed continuous reactor under the action of a composite metal oxide catalyst of A x B y O z type. The process route is simple, environmentally friendly, and the catalyst is easy to prepare, thus providing a new and effective approach for synthesizing cyclopentadiene from cyclopentanone.

The invention belongs to the technical field of chemical preparation, and particularly relates to a method for preparing a fuel precursor by catalyzing furfural and cyclopentanone with a Cu-Ni bimetallic multifunctional catalyst. The preparation method comprises the following steps: under a solvent-free condition, taking cyclopentanone and furfural as raw materials, and carrying out aldol condensation series hydrodeoxygenation reaction in a hydrogen atmosphere under the action of a Cu-Ni bimetallic multifunctional catalyst to obtain a C10 and C15 mixed fuel precursor taking 2, 5-bis (furan-2-yl methyl) cyclopentanone as a main component. The method has few operation steps, aldol condensation and hydrogenation reactions can be connected in series, forward movement of the aldol condensation reaction is effectively promoted through continuous hydrogenation of the intermediate, reverse aldol condensation reaction is inhibited, and the product selectivity and yield of the whole process are improved. The reaction product is liquid, and no solvent is used in the next step of hydrodeoxygenation reaction, so that no solvent is used in the whole reaction route of fuel synthesis, and the method is more environment-friendly, greener and more efficient.

The application relates to a synthesis method of 2-hydroxy-2-methylcyclopentanone compounds and belongs to the technical field of organic synthesis. The 2-hydroxy-2-methylcyclopentanone compounds are prepared from cyclobutanone compounds through protection of carbonyl groups, deprotection and rearrangement reaction; the application does not need to use expensive metal catalysts, has mild reaction conditions, does not need high-pressure equipment, is high in safety and easy to be industrialized, is high in atomic economy, is simple in operation, avoids use of highly toxic or high-pollution reagents, and is low in mercury salt consumption.

The invention belongs to the technical field of catalysts. The invention provides a catalyst for preparing cyclopentanone through cyclopentanol dehydrogenation and a preparation method thereof.The preparation method comprises the steps that S1, 120-126 g of potassium pyrophosphate, 10-13 g of stannous chloride, 8-10 g of copper sulfate and 2-3 g of carbon nano tube powder are added into 1 L of deionized water, the pH value is adjusted to 7-8, and an electroplating solution is obtained; s2, assembling a PS colloidal crystal template on the pretreated copper sheet to obtain a copper sheet with the PS colloidal crystal template; s3, taking a copper sheet with the PS colloidal crystal template as a cathode and a titanium mesh as an anode, performing electro-deposition in the electroplating solution, roasting at 500-550 DEG C for 3-4 hours, stripping and grinding to obtain a Sn-Cu-CNT composite material; s4, etching the Sn-Cu-CNT composite material with 10vol% acetic acid for 30-35 minutes in an ice bath at 0-5 DEG C to obtain an etched material, putting the etched material into an ammonia water-EDTA (Ethylene Diamine Tetraacetic Acid) mixed solution with the pH (Potential of Hydrogen) of 9.5, and oscillating for 10 minutes at 60 DEG C to obtain a carrier; and S5, impregnating the carrier with a nickel nitrate solution, drying, and roasting to obtain the catalyst. The method can effectively improve the conversion rate of cyclopentanol and the selectivity of cyclopentanone.

The invention belongs to the field of organic synthesis, and discloses a method for realizing selective synthesis of cyano-substituted isoxazoline and 3H-pyrrole-3-ketone through temperature regulation, which comprises the following steps: by taking alkynyl ketoxime as a raw material, copper trifluoromethanesulfonate as a catalyst and cyanobenzo iodo-oxacyclopentanone (CBX reagent) as a cyanation reagent, reacting at the temperature of 20-50 DEG C under the condition that the temperature is 20-50 DEG C, thereby obtaining the cyano-substituted isoxazoline and 3H-pyrrole-3-ketone with the cyano-substituted isoxazoline and 3H-pyrrole-3-ketone. And carrying out tube sealing reaction in an inert gas atmosphere to obtain the cyano-substituted isoxazoline. When the temperature is increased to 100 DEG C to 120 DEG C, the reaction time is prolonged, and the cyano-substituted 3H-pyrrole-3-ketone is obtained. According to the invention, two different cyano-substituted nitrogen-containing heterocyclic compounds are selectively synthesized through temperature regulation and control and free radical cascade reaction of different paths. The reaction catalyst is less in dosage, the substrate is wide in application range, the operation is simple, and the method is efficient.

This invention discloses an ABS surface scratch repair coating and its preparation method, relating to the field of coating technology. The ABS surface scratch repair coating is prepared by reacting 3,9-dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane 3,9-dioxide with formic acid to obtain intermediate 1; reacting intermediate 1 with diethyl maleate to obtain intermediate 2; reacting intermediate 2 with ethylenediamine to obtain a polyamino phosphorus-containing curing agent; reacting p-hydroxybenzoic acid with 2-chlorocyclopentanone to obtain cyclopentanone benzoate; reacting nano-cerium dioxide sequentially with 3-chloropropyltrimethoxysilane and cyclopentanone benzoate to obtain modified nano-cerium dioxide; and mixing epoxy resin, polyamino phosphorus-containing curing agent, puerarin, and modified nano-cerium dioxide with acetone as a diluent to obtain the ABS surface scratch repair coating. The ABS surface scratch repair coating prepared by this invention has superior weather resistance and flame retardant properties.

This invention provides a method for the highly selective hydrogenation of furfural to prepare cyclopentanone. Using furfural, a biomass derivative, as the raw material, cyclopentanone is obtained in one step via hydrogenation rearrangement reaction in a high-pressure reactor under a low-hydrogen pressure atmosphere and in the presence of a metal-supported catalyst, with water as the solvent. The metal-supported catalyst of this invention is prepared by co-impregnation of active metal palladium and transition metal Ni. The obtained catalyst has advantages such as high metal dispersion, strong heat and mass transfer capabilities, convenient recovery and separation, high efficiency, and good stability, which is of great significance for the economical production of chemicals. After reaction at 1 MPa H2, 180 °C, and 3 h, the furfural conversion rate and cyclopentanone selectivity reached 95% and 92.24%, respectively, with a yield of 87.63%. The reaction process conditions are mild, the raw materials are inexpensive and readily available, and quantitative conversion from furfural to cyclopentanone can be achieved in the aqueous phase, making it an environmentally friendly green chemical process.

The invention discloses a preparation method of exo-8-oxo-bicyclo [3.2. 1] octane-3-carboxylic acid methyl ester, which comprises the following steps: carrying out deprotonation reaction on cyclopentanone under a strong alkali condition, and then carrying out ortho-alkylation reaction on the deprotonation product and 2-(bromomethyl) methyl acrylate to obtain 2-((2-oxo-cyclopentyl) methyl) methyl acrylate; 2-((2-oxocyclopentyl) methyl) methyl acrylate is subjected to a Michael addition cyclization reaction in a catalyst / organic solvent system, inner-8-oxobicyclo [3.2. 1] octane-3-carboxylic acid methyl ester is obtained, the reaction continues under the same conditions, and the inner-8-oxobicyclo [3.2. 1] octane-3-carboxylic acid methyl ester is obtained. And carrying out isomerization on the inner-8-oxo-bicyclo [3.2. 1] octane-3-carboxylic acid methyl ester until the inner-8-oxo-bicyclo [3.2. 1] octane-3-carboxylic acid methyl ester is completely converted into the outer-8-oxo-bicyclo [3.2. 1] octane-3-carboxylic acid methyl ester. The preparation method provided by the invention fills up the blank that the ex-8-oxo-bicyclo [3.2. 1] octane-3-carboxylic acid methyl ester cannot be synthesized in the prior art and the extrinsic derivative cannot be synthesized by using the extrinsic raw material in the actual research and development process.

The invention provides a process for producing cyclopentanone from cyclopentene, and belongs to the technical field of cyclopentanone production.In the esterification reaction, acetic acid is used for removing metal ions to improve the activity stability of a sulfonic cation exchange resin catalyst; when the ester hydrogenation process is used, the cyclopentyl acetate is directly converted into cyclopentanol and absolute ethyl alcohol with high added value; the appropriate CuO-ZnO / Al2O3 high-activity dehydrogenation catalyst is selected, so that the reaction efficiency is obviously improved, the energy consumption is obviously reduced, the conversion per pass of the dehydrogenation reaction is 70% or above, and the selectivity of cyclopentanone is close to 100%. In short, the production method provided by the invention is high in catalyst activity, high in reaction conversion rate, short in reaction time, relatively easy in product refining and cyclopentanol recovery, obviously reduced in energy consumption and more suitable for industrial production.

The invention discloses a cyclopentanone microcapsule material and a preparation method thereof, and belongs to the technical field of agriculture, the cyclopentanone microcapsule material comprises the following components by weight: 12-20 parts of modified cyclopentanone, 20-35 parts of resin, 35-55 parts of gelatin, 3-7 parts of a stabilizer, 3-7 parts of a plasticizer, 3-7 parts of an opacifying agent, and 50-80 parts of water. According to the invention, the prepared microcapsule material can reduce the rapid decomposition rate of cyclopentanone by microorganisms in soil, plays a role in protecting cyclopentanone, delays the release of cyclopentanone, prolongs the action time of cyclopentanone, and further improves the action efficiency of cyclopentanone.

A resin composition, a cured product obtained by curing the composition, a laminate including the cured product, a method for producing the cured product, a method for producing the laminate, a method for producing a semiconductor device including the method for producing the cured product, and a semiconductor device including the cured product. The resin composition contains at least one resin selected from the group consisting of polyimides and precursors thereof, a polymerizable compound, and a polymerization initiator, and a film having a thickness of 10 [mu] m obtained from the resin composition has a dissolution rate of 0.01-0.55 [mu] m / sec with respect to cyclopentanone.